Ebay offers Superdry Unisex Bum Bag for $12.48 (reg $24.95) with free shipping.

Product Description:
Superdry men's small bum bag. Update your bag collection this season with this bum bag featuring a main zip compartment, a small front zip pocket and a large adjustable buckle strap. Complete with a textured Superdry logo on the front.
H 13cm x W 27cm x D 7cm